send spam messages to spam folder

[Walter Breno]

Hi!
I'm using postfix with mailscanner to integrate spamassassin and clamav, but
when spamassassin score a message as spam the subject of the message is
chagnged to {Spam?} subject and i want to send every message that
spamassasin mark directly to the spam folder.
PS.: i'm using cyrus-sasl